TY  - JOUR
TI  - Variations in Diets of Nesting Common Ravens
T2  - The Wilson bulletin
VL  - 103
IS  - 1
UR  - https://www.biodiversitylibrary.org/part/242410
PB  - Wilson Ornithological Society
CY  - Columbus, Ohio
PY  - 1991
SP  - 83
EP  - 92
AU  - Stiehl, Richard B 
AU  - Trautwein, Steven N
ER  -